How can you determine the slope of a hill using a map?

To determine the slope of a hill using a map, analyzing contour lines is the most effective method. Contour lines represent elevation on a topographic map, and their spacing indicates the steepness of the slope. When contour lines are close together, this indicates a steep incline; when they are spaced farther apart, it suggests a gentler slope. By examining the arrangement and intervals of these lines, one can accurately identify and evaluate the slope of the terrain.

In contrast, measuring distances alone does not provide information about the elevation change or steepness of the hill. Visual observation, while helpful in a physical environment, is not applicable when relying solely on a map's abstract representation. Following a route may help in understanding terrain but does not impart knowledge about the gradient without analyzing the contour lines depicted on the map.